Which Features Are Required for Efficient External Respiration to Take

question 19

Multiple Choice

Which features are required for efficient external respiration to take place?

• A)The gas exchange region must be moist,thin and have a large surface area.
• B)The gas exchange region must be dry,thin and have a large surface area.
• C)The gases being exchanged must be present in a low concentration in order for diffusion to occur.
• D)Gas exchange can only occur at a temperature lower than the body temperature of the organism.
• E)The gas exchange needs to occur in an aquatic environment in order to be efficient.

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Definitions:

Iodobutane

An organic compound with the formula C4H9I, characterized as a butane molecule where one hydrogen atom has been replaced by an iodine atom.

Methanol

Methanol, a straightforward alcohol bearing the formula CH3OH, serves multiple purposes such as a solvent, antifreeze, fuel, and a foundational material for producing other chemicals.

E1 Reactions

A type of unimolecular nucleophilic substitution reaction where the rate-determining step involves the loss of a leaving group to form a carbocation intermediate.

Alkyl Halides

Organic compounds containing a halogen atom (chlorine, bromine, fluorine, or iodine) bonded to an alkyl group.